It has been 6 years to the month since I sustained an injectional injury while being numbed for filling replacements.My current status is that I do not have feeling on the left side of my tongue. I had developed a bad habit of biting on the affected side and now my tongue seems to have been affected by that action (an 'appendage' has developed as a result). I cannot taste on the affected side of the tongue. Apparently, the brain seems to adapt to this although my sense of taste has definitely been reduced. The tingling on the left side of my tongue has gone, but the excess salivation on the affected side is the same. One benefit of the loss of tingling on the affected side is that I am no longer inclined to chew on the tongue. However, since there is an appendage there now, I tend to work the left side of my tongue against my teeth making the area raw which doesn't hurt per se. When I catch myself doing this, I stop - but I have an unconscious urge to do it. I really wish someone could help me with this problem, but I feel that there isn't much hope for me.
I have not been back to the dentist that injured me since 2005. The dentist had forwarded my records to my new dentist (in the same town) on his own volition. I have mentioned the current issue to my new dentist and he has not offered up anything.
I still (occasionally) read posts on this site, but I am not sure I can offer any hope from my own experiences. I know what some of you are going through and it sucks.